. >>> defense secretary leon panetta says the u.s. is facing a possibility of a cyber pearl harbor attack. panetta says increasingly sophisticated computer hackers could dismantle the u.s. power grid, transportation system, financial networks, and the government. recent cyber attacks against oil and gas companies were the most destructive the private sector has ever seen. the attacks on a saudi oil company effected more than 30,000 computers. >>> photos of mitt romney pop up on a google search but not in a way that favors the presidential nominee. if you type in completely wrong a full page of mitt romney photos comes up. it's not a political statement by the company instead he says it's due to the search engine picking up on news coverage of romney saying last week he was completely wrong last spring when he said that 47% of americans were dependent on government. the obama campaign claims it has gained momentum after last nights performance by joe biden. alison burns is live in our washington, d.c. newsroom with a look at why some o